Where does “выпускной” come from?
выпускной (Russian) comes from Russian вы́пуск, from Russian вы́-, from Old East Slavic вꙑ-, from Proto-Slavic vy-, from Proto-Balto-Slavic ū́, from Proto-Indo-European úd — out, outward.
выпускной (Russian): exhaust; graduation
Ancestry of “выпускной”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Russian | вы́пуск | — |
| 2 | Russian | вы́- | — |
| 3 | Old East Slavic | вꙑ- | — |
| 4 | Proto-Slavic | vy- | out |
| 5 | Proto-Balto-Slavic | ū́ | — |
| 6 | Proto-Indo-European | úd | out, outward |